falcon,
You stated that this would be used for CAD drawings... what are you running autocad?
In any case you will want a good amount of ram and discrete graphics (to reduce the CPU load) if possible.
If you read the articles on Intel's "on-board" graphic chips you find that they can consume 20%+ of the CPUs clock cycles... a cheap ATI 9550 Radeon ($50) will be worth it to you.
My recommendations:
AMD Venice 3000+ (Retail $150)
Chaintech VNF4 ($90)
Geil/OCZ/Patriot/"name brand" RAM 2x512MB ($120)
SATAII 80GB HD (WD/Samsung/Maxtor) $60
Antec Solution case/350W PSU $80 (shipped)
DVD/CDRW (Liton/Sony) $50
ATI X300 PCI-Express $70
XP Home (OEM) $90
Total: $710
First of all, thanks everybody for all the help
going mostly off of kleinwl's advice heres what i have so far
Chaintech VNF4/Ultra (85)
AMD Venice 3000+ (146.00)
Memory (several options and need help deciding):
1. 1GB mushkin (79.95)
2. 512 OCZ (42.50)
3. 2 x 512 Patriot signature series (82.99)
case (has to be a desktop, is the psu enough) coolermaster desktop w/300 psu (119.20 shipped)
Drive Sony DVD-RW/CD-RW (45.99)
ATI x300 pci-express (70)
Microsoft xp home (88.95)
I still need office its 199.95 so that comes to 635.09 with out shipping except the case, and with office its 835.04 i need to trim off a little fat, i dont need the dvd-rw so how cheap can i get a reliable cd-rw and then maybe just 512 would work